(transitive) to relax, to loosen
(transitive) to soothe (e.g., the body, one's skin)
(transitive, figurative) to loosen up, to ease up, to ease, to lighten, (e.g., a restriction, the mood)
(takes a reflexive pronoun) to relax, to unwind, to chill, to chill out, to wind down, to kick back, to sit back, to loosen up, to decompress